<template>
	<view class="goods-item">
		<!-- 商品左侧图片区域 -->
		<view class="goods-item-left">
			<radio color="#c00000" :checked="goods.goods_state" v-if="showRadio" @click="radioClickHandler" />
			<image :src="goods.goods_small_logo || defaultPic" class="goods-pic"></image>
		</view>
		<!-- 商品右侧信息区域 -->
		<view class="goods-item-right" >
			<!-- 商品标题 -->
			<view class="goods-name" @click="goDetail(goods)">{{goods.goods_name}}</view>
			<view class="goods-info-box">
				<!-- 商品价格 -->
				<view class="goods-price">￥{{goods.goods_price | moneyFormat}}</view>
				<uni-number-box ref="number_box" :min="1" :value="goods.goods_count" v-if="showNum" @change="numChangeHandler"></uni-number-box>
			</view>
		</view>
	</view>
</template>

<script>
	export default {
		props: {
			goods: {
				type: Object,
				required: true
			},
			showRadio: {
				type: Boolean,
				default: false
			},
			// 是否展示价格右侧的 NumberBox 组件
			    showNum: {
			      type: Boolean,
			      default: false,
			    },
		},
		data() {
			return {
				defaultPic: 'https://img3.doubanio.com/f/movie/8dd0c794499fe925ae2ae89ee30cd225750457b4/pics/movie/celebrity-default-medium.png'
			};
		},
		filters: {
			moneyFormat: function(str) {
				return Number(str).toFixed(2)
			}
		},
		methods: {

			goDetail(goods) {
				console.log(111)
				uni.navigateTo({
					url: '/subpkg/goods_detail/goods_detail?goods_id=' + goods.goods_id
				})
			},
			radioClickHandler() {
				// 通过 this.$emit() 触发外界通过 @ 绑定的 radio-change 事件，
				// 同时把商品的 Id 和 勾选状态 作为参数传递给 radio-change 事件处理函数
				this.$emit('radio-change', {
					// 商品的 Id
					goods_id: this.goods.goods_id,
					// 商品最新的勾选状态
					goods_state: !this.goods.goods_state
				})
			},
			// NumberBox 组件的 change 事件处理函数
			  numChangeHandler(val) {
				  //判断val是不是数字，如果不是数字，值就修改为1
				 if(Number.isNaN(val - 0)){
					 val = 1					 
				 }
			    // 通过 this.$emit() 触发外界通过 @ 绑定的 num-change 事件
			    this.$emit('num-change', {
			      // 商品的 Id
			      goods_id: this.goods.goods_id,
			      // 商品的最新数量
			      goods_count: +val
			    })
			  }
		}
	}
</script>

<style lang="scss">
	.goods-item {
		display: flex;
		padding: 10px 5px;
		border-bottom: 1px solid #f0f0f0;

		.goods-item-left {
			margin-right: 5px;

			.goods-pic {
				width: 100px;
				height: 100px;
				display: block;
			}
		}

		.goods-item-right {
			display: flex;
			flex-direction: column;
			justify-content: space-between;

			.goods-name {
				font-size: 13px;
			}

			.goods-price {
				font-size: 16px;
				color: #c00000;
			}
		}
	}

	.goods-item-left {
		margin-right: 5px;
		display: flex;
		justify-content: space-between;
		align-items: center;

		.goods-pic {
			width: 100px;
			height: 100px;
			display: block;
		}
	}
	.goods-item-right {
	  display: flex;
	  flex: 1;
	  flex-direction: column;
	  justify-content: space-between;
	
	  .goods-name {
	    font-size: 13px;
	  }
	
	  .goods-info-box {
	    display: flex;
	    align-items: center;
	    justify-content: space-between;
	  }
	
	  .goods-price {
	    font-size: 16px;
	    color: #c00000;
	  }
	}
</style>
